| article html file updated | 5 February 2020 19:41 CET | Update | https://www.mdpi.com/1660-3397/10/3/604 |
| article html file updated | 19 September 2019 08:58 CEST | Update | - |
| article html file updated | 8 May 2019 19:48 CEST | Update | - |
| article html file updated | 25 March 2019 09:49 CET | Update | - |
| article html file updated | 16 June 2015 22:13 CEST | Update | - |
| article html file updated | 7 February 2013 10:58 CET | Update | - |
| article html file updated | 7 February 2013 01:03 CET | Update | - |
| article html file updated | 6 February 2013 06:27 CET | Update | - |
| article html file updated | 29 January 2013 02:06 CET | Update | - |
| article html file updated | 26 January 2013 08:40 CET | Update | - |
| article html file updated | 23 January 2013 12:05 CET | Original file | - |